DayValue gives incorrect results when run in non-UTC environment

[56quarters]

When running unit tests locally for DayValue, they fail and appear to be off by one day.

--- FAIL: TestDayValueYAML (0.00s)
    day_test.go:25: 
                Error Trace:    day_test.go:25
                Error:          Not equal: 
                                expected: []byte{0x64, 0x61, 0x79, 0x3a, 0x20, 0x22, 0x31, 0x39, 0x38, 0x35, 0x2d, 0x30, 0x36, 0x2d, 0x30, 0x32, 0x22, 0xa}
                                actual  : []byte{0x64, 0x61, 0x79, 0x3a, 0x20, 0x22, 0x31, 0x39, 0x38, 0x35, 0x2d, 0x30, 0x36, 0x2d, 0x30, 0x31, 0x22, 0xa}
                            
                                Diff:
                                --- Expected
                                +++ Actual
                                @@ -1,3 +1,3 @@
                                 ([]uint8) (len=18) {
                                - 00000000  64 61 79 3a 20 22 31 39  38 35 2d 30 36 2d 30 32  |day: "1985-06-02|
                                + 00000000  64 61 79 3a 20 22 31 39  38 35 2d 30 36 2d 30 31  |day: "1985-06-01|
                                  00000010  22 0a                                             |".|
                Test:           TestDayValueYAML
    day_test.go:47: 
                Error Trace:    day_test.go:47
                Error:          Not equal: 
                                expected: []byte{0x64, 0x61, 0x79, 0x3a, 0x20, 0x22, 0x31, 0x39, 0x38, 0x35, 0x2d, 0x30, 0x36, 0x2d, 0x30, 0x32, 0x22, 0xa}
                                actual  : []byte{0x64, 0x61, 0x79, 0x3a, 0x20, 0x22, 0x31, 0x39, 0x38, 0x35, 0x2d, 0x30, 0x36, 0x2d, 0x30, 0x31, 0x22, 0xa}
                            
                                Diff:
                                --- Expected
                                +++ Actual
                                @@ -1,3 +1,3 @@
                                 ([]uint8) (len=18) {
                                - 00000000  64 61 79 3a 20 22 31 39  38 35 2d 30 36 2d 30 32  |day: "1985-06-02|
                                + 00000000  64 61 79 3a 20 22 31 39  38 35 2d 30 36 2d 30 31  |day: "1985-06-01|
                                  00000010  22 0a                                             |".|
                Test:           TestDayValueYAML

Local machine:

$ timedatectl 
               Local time: Wed 2021-08-25 19:21:47 EDT
           Universal time: Wed 2021-08-25 23:21:47 UTC
                 RTC time: Wed 2021-08-25 23:21:47
                Time zone: America/New_York (EDT, -0400)
System clock synchronized: yes
              NTP service: active
          RTC in local TZ: no