Discord turns <t:1798765200:F> into a date shown in each reader's own time zone. The format is documented, but what Discord does with bad input isn't. Bots generate these strings, and bots get the input wrong, so on 4 November 2026 I sent 16 malformed or extreme codes to a private server from the Discord web client and read back what rendered.
Code
What it tests
Discord showed
<t:1798765200:F>
Normal
Friday, January 1, 2027 at 6:30 AM
<t:1798765200000:F>
Milliseconds by mistake
Tuesday, August 7, 58970 at 9:30 PM
<t:0:F>
Zero
Thursday, January 1, 1970 at 5:30 AM
<t:-86400:F>
Negative
Wednesday, December 31, 1969 at 5:30 AM
<t:2147483648:F>
One past the 32-bit limit
Tuesday, January 19, 2038 at 8:44 AM
<t:8640000000000:F>
Largest JavaScript date
Saturday, September 13, 275760
<t:8640000000001:F>
One second past that
raw text
<t:0001798765200:F>
Leading zeros
renders normally
<t:1798765200>
No style lett
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