Merge pull request #1172 from herwinw/date_yday #1679

Job	Run time
RuboCop	27s
specs (ubuntu, 3.0.6)	1m 27s
specs (ubuntu, 3.1.4)	1m 27s
specs (ubuntu, 3.2.2)	1m 27s
specs (ubuntu, 3.3.0)	1m 26s
specs (macos, 3.0.6)	1m 22s
specs (macos, 3.1.4)	1m 40s
specs (macos, 3.2.2)	1m 11s
specs (macos, 3.3.0)	1m 11s
specs (windows, 3.0.6)	3m 43s
specs (windows, 3.1.4)	4m 59s
specs (windows, 3.2.2)	4m 8s
specs (windows, 3.3.0)	4m 30s
specs (ubuntu, 3.3.0, --enable-frozen-string-literal)	1m 21s
	30m 19s

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