| Carbon | strftime | Go | Meaning | Example |
|---|---|---|---|---|
| Y | %Y | 2006 | Year, four digits | 2020 |
| y | %y | 06 | Year, two digits | 20 |
| m | %m | 01 | Month, two digits | 08 |
| n | - | 1 | Month, as a number without leading zeros | 8 |
| M | %b | Jan | Month name, abbreviated | Aug |
| F | %B | January | Month, full name | August |
| d | %d | 02 | Day of the month, two digits | 21 |
| j | %e | 2 | Day of the month, without leading zero | 21 |
| w | %w | 0 | Day of the week, as a number | 5 |
| D | %a | Mon | Day of the week, abbreviated | Fri |
| l | %A | Monday | Day of the week, full name | Friday |
| h | %I | 03 | Hour, 12-hour notation | 05 |
| g | %l | 3 | Hour, without leading zero | 5 |
| H | %H | 15 | Hour, 24-hour notation | 17 |
| i | %M | 04 | Minute, two digits | 15 |
| - | - | 4 | Minute, without leading zero | 15 |
| s | %S | 05 | Second, two digits | 23 |
| - | - | 5 | Second, without leading zero | 23 |
| A | %p | PM | AM or PM | PM |
| a | %P | pm | am or pm | pm |
| v | %L | .000 | Milliseconds | 825 |
| u | %6 | .000000 | Microseconds (six digits) | 825261 |
| - | %9 | .000000000 | Nanoseconds (nine digits) | 825261389 |
| O | %z | -0700 | Timezone | +0200 |
| P | - | -07:00 | Timezone | +02:00 |
| T | %Z | MST | Timezone | CEST |
参考：https://chuniversiteit.nl/programming/datetime-formatting-in-go