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Handling Moving Holidays in a Business-Day Calculator: Data Sources and Edge Cases
Nomad Wozo
Nomad Wozo
Nomad Wozo
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Nov 12
Handling Moving Holidays in a Business-Day Calculator: Data Sources and Edge Cases
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python
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webdev
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programming
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datetime
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6 min read
Moderation
How to compute US banking days in JavaScript
Abdul Hannan
Abdul Hannan
Abdul Hannan
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Nov 11
How to compute US banking days in JavaScript
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javascript
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datetime
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fintech
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tutorial
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5 min read
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Why Your Time Zone Conversion Is Off by an Hour (DST Edge Cases)
calculatorspan
calculatorspan
calculatorspan
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Nov 10
Why Your Time Zone Conversion Is Off by an Hour (DST Edge Cases)
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javascript
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beginners
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4 min read
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Mapping U.S. area codes to IANA time zones in JavaScript (and the 22 multi-zone edge cases)
Justin Smith
Justin Smith
Justin Smith
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Nov 9
Mapping U.S. area codes to IANA time zones in JavaScript (and the 22 multi-zone edge cases)
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javascript
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datetime
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programming
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webdev
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4 min read
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The Year-Zero Bug: Checking the "Seventy Weeks" of Daniel 9 with Python
Ancient Biotechnology
Ancient Biotechnology
Ancient Biotechnology
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Nov 7
The Year-Zero Bug: Checking the "Seventy Weeks" of Daniel 9 with Python
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python
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history
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datetime
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3 min read
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Designing a Birth-Time Form That Does Not Invent an Astrology Chart
FateShow
FateShow
FateShow
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Nov 4
Designing a Birth-Time Form That Does Not Invent an Astrology Chart
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datetime
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astrology
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ux
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2 min read
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How I count business days with public holidays in JavaScript (rules, an API, and the corrections it needed)
Kang Jeongsik
Kang Jeongsik
Kang Jeongsik
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Nov 7
How I count business days with public holidays in JavaScript (rules, an API, and the corrections it needed)
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showdev
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5 min read
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Days between dates in America/Los_Angeles: when one day becomes zero
Kai Mercer
Kai Mercer
Kai Mercer
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Oct 28
Days between dates in America/Los_Angeles: when one day becomes zero
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webdev
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2 min read
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A birth time is a wall clock, not an instant: how one timezone bug moves a rising sign
Ahmet UlutaĹź
Ahmet UlutaĹź
Ahmet UlutaĹź
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Nov 10
A birth time is a wall clock, not an instant: how one timezone bug moves a rising sign
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javascript
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webdev
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4 min read
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Julian Date Conversion in Code: YYDDD, CYYDDD, JD and MJD in Python, JavaScript, SQL and Excel
Ordinal Dates
Ordinal Dates
Ordinal Dates
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Oct 21
Julian Date Conversion in Code: YYDDD, CYYDDD, JD and MJD in Python, JavaScript, SQL and Excel
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sql
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4 min read
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Case study (hypothetical): the subscription renewals that drifted from the 31st to the 28th, and stayed there
delay.run
delay.run
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Nov 11
Case study (hypothetical): the subscription renewals that drifted from the 31st to the 28th, and stayed there
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datetime
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billing
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architecture
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5 min read
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MRZ dates have no century: reading YYMMDD without year-2000 bugs
Teoh Chin Heng
Teoh Chin Heng
Teoh Chin Heng
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doc.cheap
Oct 19
MRZ dates have no century: reading YYMMDD without year-2000 bugs
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6 min read
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Unix Timestamp and Epoch Time Explained: 10-Digit vs 13-Digit Precision, Leap Second Smearing, Timezone Traps, and the Year
tinali7564-eng
tinali7564-eng
tinali7564-eng
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Oct 19
Unix Timestamp and Epoch Time Explained: 10-Digit vs 13-Digit Precision, Leap Second Smearing, Timezone Traps, and the Year
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unixtimestamp
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epochtime
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datetime
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javascript
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8 min read
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The AI-generated date test passes today and fails next week
Jeff
Jeff
Jeff
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Oct 23
The AI-generated date test passes today and fails next week
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testing
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3 min read
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'Remind me next Tuesday at 3': 6 libraries for parsing natural-language dates, and the traps in each
delay.run
delay.run
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Nov 10
'Remind me next Tuesday at 3': 6 libraries for parsing natural-language dates, and the traps in each
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5 min read
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